TM 9-2330-238-14
4-73. HEATER REPLACEMENT (Con’t).
5.
Loosen two thumbscrews (48) and remove four screws (46), hinge (47), and heater cover assembly (45) from
heater duct assembly (49).
6.
Remove four screws (50) and two spring nuts (51) from heater duct assembly (49).
h.
INSTALLATION (M749 CONVERTO MODEL 8929)
1.
Position two spring nuts (51 ) on heater duct assembly (49) and secure with four screws (50).
2.
Position hinge (47) and heater cover assembly (45) on heater duct assembly (49) and secure with four screws
(46). Tighten two thumbscrews (48).
3.
Position heater (52) in place on heater duct assembly (49).
4.
Install mounting bracket (43) on heater (52) and heater duct assembly (49) with four screws (44), three screws
(42) and three retainers (53).
5.
Connect all electrical leads to heater (52). Remove tags.
i .
INSPECTION (ALL MODELS)
1.
Inspect seals, rubber strip, or gaskets for cracks, breaks, or deterioration. Replace as necessary.
2.
Inspect heater cover assembly and hinge for cracks, bends, or breaks. Straighten any minor bends or dents. If
damaged, remove rivets or screws and replace defective part.
FOLLOW-ON TASKS:
•install exhaust system (para 4-72).
• Install fuel lines (para 4-70).
• Close side bonnet doors.
• Test heater operation.
4-187
